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Article
Mössbauer surface study of nitrogen-implanted high carbon martensite
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Chapter
Transition Metal Substitution in Fe7 5TM5 B2 0 Amorphous Alloys. Effect on Structure, Thermal Stability, and Structural Relaxation
A series of amorphous alloys of Fe80B20, with a constant amount of transition metal substitution and the nominal composition Fe75TM5B20, have been obtained by the “melt-spinning” technique. Differential scanning ...
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Article
On the nature of iron-chromium oxides in stainless steel steelmaking slags
A number of slags from electric steelmaking production of AISI 420 and AISI 304 steels, were examined by Mössbauer spectroscopy. The slag samples were taken before and after oxygen blowing.
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Article
Quenching rate effect on the structure of amorphous alloys as characterized by Mössbauer spectroscopy
Mossbauer spectroscopy and Doppler-broadening measures (alloy Fe44 Ni36 P14 B6) indicate that on increasing the cooling rate, the spin and charge density increases as well as the free-volume content. It is pro...
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Article
Partial anisotropy induced by low-field thermomagnetic treatment of noncrystalline ribbons
The initial development of the transverse anisotropy induced by magnetic annealing is investigated for magnetizing field values which are much smaller than the ones generally employed. Measurements of Young mo...
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Article
Mechanical alloying of Fe and V powders: Intermixing and amorphous phase formation
Mössbauer spectrometry and x-ray diffractometry were used to characterize the microstructural changes that occurred during the mechanical alloying of Fe and V powders, After 3 h of essentially no interatomic i...
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Article
Mechanically driven syntheses of carbides and silcides
Most metal carbides or slicides may be synthesized at room temperature, by ball milling mixtures of elemental powders for some tens of hours with a vibratory mill. Both stable and metastable compounds containi...
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Article
Mössbauer study of mechanosynthesized iron carbides
Syntheses of Fe1−x C x alloys (forx≲0.15) and carbides (for 0.15≲x≲0.50) can be obtained by room temperature grinding of the elemental Fe and C powders. ...
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Article
Thermal evolution of Co1−x-Px electrodeposited ribbons and its influence on the electrical resistivity
Co-P ribbons have been obtained by electrodeposition on aluminium substrates. The effect of changing the current density (in the range 8–19 A dm−2) and the H3PO3 concentration on the nature of the phases present ...
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Article
119Sn Mössbauer spectroscopy in nanocrystalline aluminat-in composites synthesized by direct grinding and reactive ball milling
Alumina-tin nanocomposites have been synthesized by direct grinding of α-Al2O3-β-Sn powder mixtures, as well as by reactive milling of Al-SnO2 mixtures. According to the preparation method used, the composites di...
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Article
Mechanosynthesis of nanocrystalline materials
Mechanical alloying is a method of synthesis of advanced materials, often with non-equilibrium structures, and, remarkably, of crystalline materials with nanometersized grains. Grinding is also a way of induci...
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Article
Mechanochemical synthesis of iron-alumina (75 vol%) nanocermets
Nanocomposites α-Al2O3-Fe containing 75 vol% Al2O3 have been obtained by reaction milling, in a vibratory ball mill, a stoichiometric excess of alumina with aluminum and hematite. The kinetics of synthesis of the...
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Article
Crystallization of amorphous Fe73.5Si13.5B9Nb3Cu1
A study is reported on the devitrification behaviour of the amorphous alloy Fe73.5Si13.5B9Nb3Cu1. Samples of the studied glass underwent isothermal and non-isothermal heat treatments in a thermal analysis appa...
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Chapter and Conference Paper
New Possibilities by Direct Laser Micro Sintering for Micro System Technology Components Using Nanophased Powders
Paper describes a new manufacturing method based on the most advanced small scale laser sintering technology able to shape solid metallic objects being composed of nanophased powders. New development in powder...
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Article
Mechanical properties and deformation mechanisms of nanocrystalline Fe/Cu 60/40 composites
The effect of grain size upon the strength of nanocrystalline iron/copper (Fe/Cu) composites has been explored. Composites of composition 60 Fe/40 Cu (by weight) were produced by consolidation of ball-milled p...
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Article
Coefficient of Friction Measured from Nano- to Macro-Normal Loads on Plasma Sprayed Nanostructured Cermet Coatings
Alumina dispersed FeCuAl-based nanostructured cermet coatings were deposited from nanostructured powders by atmospheric plasma spraying on low carbon steel substrates. Nanostructuring was retained in the depos...
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Chapter
NANOfutures, the European Technology Integrating and Innovation Platform: Nanotechnologies—Essential Part of Sustainable Development
The European Commission has identified six Key Enabling Technologies (KETs), including nanotechnology and micro and nanoelectronics, as a key priority of the new R&I Programme Horizon 2020 for the smart, susta...
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Article
Structural and Tribological Properties of Nanostructured Supersonic Cold Sprayed Ni-20 wt.% Sn Coatings
80-μm-thick nanostructured coatings consisting of a Ni solid solution, Ni3Sn, Ni3Sn2, and metastable NiSn intermetallic phases were deposited via supersonic cold spraying onto inconel 718 alloy substrates. These ...
